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Structure and Nesting programs
Posted Date: 14 Jun 2008 Resource Type: Articles/Knowledge Sharing Category: Computer & Technology
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Posted By: Lenin Member Level: Diamond
Rating:  Points: 1
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Structure and Nesting programs
This section contains example programs demonstrating nested block
structures.
This program uses nested for loop construction.
#include
main()
{
int i , j;
for (i=2 ; i<1000 ; i++) {
for (j=2 ; j<= i/2 ; j++)
if (!(i%j)) break;
if (j>i/2) printf("%d is a prime\n" , i);
}
}
This example program uses a do-while and nested if else construction.
#include
main()
{
int a , b;
do {
printf("Enter first number: ");
scanf("%d" , &a);
printf("Enter second number: ");
scanf("%d" , &b);
if (aprintf("First number is less than second\n\n");
if (bprintf("Second number is less than first\n\n");
} while (a < 999);
}
This program uses nested for loop and if else construction.
#include
#include
main()
{
int answer, count, chances, right;
for (count=1; count<11; count++) {
printf("What is %d + %d?", count, count);
scanf("%d", &answer);
if (answer == count+count) printf("Right!\n");
else {
printf("Sorry, you're wrong \n");
printf("Try again\n");
right = 0;
/* nested for *?
for (chances=0; chances<3 && ! right; chances++){
printf("\nWhat is %d + %d?",count, count);
scanf("%d", &answer);
if (answer == count+count){
printf("Right!\n");
right=1;
}
}
/* if answer still wrong, tell user */
if (!right)
printf("the answer is %d.\n", count+count);
} /* end of else part */
} /* end of outter for loop */
}
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